Cooling system for motors



Oct. 6, 1931. H. A. KNOX ET AL 1,826,005

COOLING SYSTEM FOR MOTORS Filed Dec. 21. 1929 JNVENTORS Harry A Knux y yEflt FLExaker ATTORNEY Patented Oct. 6, 1931 UNITED STATESWFPATENT oer-ICE HARRY A. KNOX AND BERT F. BAKER, OF DAVENPORT, IOWA.

COOLING SYSTEM. FOR MOTORS Application-filed December 21, 1929. Serial No. 415,801.

(GRANTED UNDER THE ACT OF MARCH 3, 1883, AS AMENDED APRIL 30, 1928; 370 0. G. 757) The invention described herein may be manufactured and used by or forthe Government for governmental purposes without the payment to us of any royalty thereon.

This invention relates to a cooling system for motors.

The purpose of the present invention is to provide a cooling system for a motor which will enable a chamber containing the cooling fluid to be directly and intimately associated with the motor with a view to obtaining a compact power unit especially adapted for light vehicles.

According to the .invention, a reservoir continuous with some part of the body of the motor is in communication with a chamber surrounding the individual cylinders and in proximity to a fan which directs air over the motor.

With the foregoing and other objects in View, the invention resides in the novel arrangement and combination of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed may be made within the scope of what is claimed without departing from the spirit of the invention.

A practical embodiment of the invention is illustrated in the accompanying drawings, wherein:

Fig. 1 is a plan view of a radial motor constructed in accordance with the invention;

Fig. 2 is a sectional view on the line 2-2 of Fig. 1;

Fig. 3 is a sectional view on the line 3-3 of Fig. 2.

Referring to the drawings by numerals of reference:

There is shown a more or less conventional radial internal combustion engine comprising a central body or casing 5, radial cylinders 6, pistons 7 and crankeshaft 8.

Continuous with one end of the body, in the present instance the upper end, is an annular jacket 9 whose side walls 10-10 are preferably integral with the body, and whose cover 11 is attachable in any convenient mannor. The jacket provides a reservoir which may be filled with a liquid through an opening 12 in the cover. The central opening delined by the inner side wall of the annular jacket carries a bearing 13 supporting one end of the crank-shaft and on this end is a fan 14 directly overlying the motor.

Surrounding the individual cylinders is a jacket 15 preferably cast integral with the body 5 and jacket 9. The jackets 15 each include an inclined portion 16 extending to the jacket 9 whereby a channel of communication is established with an aperture 17 in the sidewall of the jacket 9. The jacket 15 is provided with an opening 18 at its outer end to permit insertion of the cylinder 6 and this opening is closed by a head 19, domed to form an ignition chamber. The jackets are formed with a number of ribs 20 to afford an increased area of cooling surface.

The chambers formed by the jackets 9 and 15 are filled with a liquid through the single opening 12. With the motor installed in a horizontal position with the reservoir jacket 9 above the cylinderj acket 15, the liquid after being heated by contact with the cylinders will, in rising to the highest point, follow the channel 16, and contact the upper surfaces of the jackets which are directly subject to air currents drawn in by the fan.

We claim:

1. In a motor, a main casing, radiating cylinders associated therewith, an annular jacket abutting one end of the casing, a jacket surrounding each of the cylinders and abutting the casing, said jacket including an inclined portion extending to the annular jacket to afford communication therewith, a crank-shaft extending centrally through the annular jacket, and a fan on said shaft.

2. In a motor, a main casing, radiating cylinders associated therewith, an annular jacket abutting one end of the casing, a jacket surrounding each of the cylinders and abutting the casing, said acket including an inclined portion extending to the annular jacket to afford communication therewith.

3. In a motor, a main casing, radiating cylinders associated therewith, an annular jacket abutting one end of the casing, a jacket surrounding each of the cylinders and abutting the casing, each cylinder jacket being in communication with the annular jacket.

4. In a motor having a main casing and radial cylinders, a acket surrounding each of the cylinders, an annular reservoir on the main casing and having communication with each of the jackets, a crank-shaft extending centrally through the reservoir and a fan on the shaft.

5. In a motor having a central main casing, cylinders radiating therefrom a jacket surrounding each of the cylinders, a reservoir on the central main casing and having communication with each of the jackets, and a fan overlying the reservoir and jackets.

6. n a motor having a central main casing, cylinders radiating therefrom, a jacket surrounding each of the cylinders, a reservoir on the central main casing and having communication with each of the jackets.

7. In a radial motor, a main casing, an annular reservoir on one end thereof, a crankshaft extending centrally through the reservoir, and a fan on the shaft.

8. In a motor, a casing comprising a cornmunicating central reservoir and radial cylinder jackets, and a fan overlying the casing.

HARRY A. KNOX. BERT F. BAKER. 

